Lewis b



(No Model.)

L. 3-. WHITE AUTOMATIC SAFETY LOGK'IEOR LOUOMOTIVE FURNACE 3003s.

Batented Dec. 30, 1884.

'INVENTOR ATTORNEYS I N: i W

Entree mares ATENT tries.

LEXVIS B. \VHITE, OF NEW YORK, N Y., ASSIGNOR TO THE AMERICAN TRADES AGENCY COMPANY, OF SAME PLACE.

AUTOMATIC SAFETY-LOCK FOR LOCOMOTlVE-FURNACE DOORS.

SPECIFICATION forming part of Letters Patent No. 310,005, dated December 30, 188%.

Application filed April 16, 1884.

To all whom it may concern.-

Be it known that I, LEWIS BOYD WHITE, of the city, county, and State of New York, have invented a new and Improvcd'Automatic Safety-Lock for Locomotive Furnace Doors, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved safety device for automatically closing and locking the fire-doors of locomotives, in case the locomotive collides with other objects, runs off the track, or in like cases.

The invention consists in a casing pivoted above the fire-door,and provided with a spring, and with an arm for closing and locking the door, which casing can be locked to hold the arm raised by abolt which is connected with a ball for automatically withdrawing the bolt when the locomotive collides with objects, or runs off the track, &c.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a longitudinal sectional elevation of my improved automatic safety-lock for locomotive fire-doors, the door' being closed. Fig. 2 is a side view of the same, the door be- 1ng open.

A tubular standard, A, provided at its top with a cup-shaped socket, B, adapted to hold a ball, C, is held on the end of a bracket, D, projecting from the rear end plate, E, of the locomotive-boiler. Directly below the bracket D a pin, F, projects from the plate E, on which pin a cylindrical or cup-shaped casing or cap, G, is held to turn, which casing contains a spiral spring, H, having one end secured to the pin F and the other to the casing. The casing G is provided with a curved arm, J, having a short lug. K, on its inner surface at its free end. A stud, L, projects from the outer surface of the casing G. Abolt, M, held loosely in the tubular standard A, is connected by a cord, chain, or wire, N, with the ball C. The fire-door O is provided with the usual pivoted latch-lever,P, for keeping the door closed. The inner end of the lever P is bent outward.

The operation is as follows: The spring H tNomodel.)

tends to swing and turn the armJ in the direction ofthe arrow a. The ball C is placed in the socket B, and the bolt M projects fromthe lower end of the tubular socket A and rests on the outside or rim of the casing O. The stud L is pressed against the said bolt by the spring H, thus holding the arm J in the position shown in dotted lines in Fig. 1. If the door is opened, the inner bent end of the latch P catches on the lug K of the arm J and thus holds the door open. To shut the door, all that is necessary is to raise the arm J slightly, when the latch P will be released and the door shut. WVhen the locomotive collides with another object, or runs off the track, &c., the ball 0 drops from the socket, and thus causes the cord,wire, or chain to pull the bolt M upward, thereby releasing the casing G. The spring H swings the arm J downward in the direction of the arrow a into the position shown in Fig. 1. If the door is closed, the part or bend J of the arm J is pressed on the upper side of the door and holds the same closed, and thus looks it. If the door is open, the arm J closes it, and then looks it in the manner described. The flames, fire, &c., cannot issue from the fire-door opening, and cannot set fire to the cab and endanger the lives of the engineer an d fireman.

Havingth us described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with a locomotive firedoor,of aspring-actuated arm adapted to lock, or close and lock, the door, and of means for automatically releasing the said arm, substantially as herein shown and described.

2. The combination, with a locomotive fircdoor, of an arm formed on a casing containing a spring, means for locking the casing to hold the arm raised, and means for automatically releasing the casing, substantially as herein shown and described.

3. The combination, with a locomotive firedoor, of an arm formed on a casing containing a spring, a bolt for locking the casing in place, and means for automatically withdrawing the bolt, substantially as herein shown and de scribed.

4. The combination, with a locomotive firedoor, of an arm formed on a pivoted casing 100 containing aspring, a belt for locking the easing in place, and a ball or weight connected by a cord, wire, or chain with the said bolt, substantially as herein shown and described.

5. The c01nbinati0n,with the casing G, having an arm, J, and containing a spring, H, of the tubular standard A, the cup-shaped socket B on the top of the standard, the bolt M, the ball O,e0nnected with the bolt by a c0rd,wire,

or chain, N, and of the stud L on the casing,

substantially as herein shown and described.

6. The combination, with the locomotivedoor 0, of the latch-lever l, the pivoted casing G, having an arm, J, the spring H, the bolt Min a tubular standard, the socket B, and the ball G,c0nnected with the bolt M by a cord, wire, or chain, N, substantially as herein shown and described.

LEXVIS B. \VHITE.

Witnesses:

OSCAR F. GUNZ, O. SEDGWIQK. 

